In order to hard reset a Prestigio MultiPhone 3400 Duo, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Prestigio MultiPhone 3400 Duo device will be brought back to the default configuration of a brand new device.
1. Switch on the phone.
2. Open Menu and go to Settings > Personal > Privacy > Factory data reset.
3. Confirm any incoming message. That is all.